This includes a few changes:
* The repo name -- and hence the Go modules -- changes from pulumi-fabric to pulumi.
* The Node.js SDK package changes from @pulumi/pulumi-fabric to just pulumi.
* The CLI is renamed from lumi to pulumi.
Report an error when Lumi runtime compilation fails.
Also adds a reusable install_release.sh script to use
for installing Lumi package releases, plus expansion
of symlinks in package Makefiles.
This change creates a scripts/ folder, moves our existing shell
script, gocover.sh, underneath it, and factors the publish logic
out of the Makefile and into the publish.sh file.
The syntax for sed differs between Mac OS X and GNU versions of
the tool, which is rather annoying. This fixes it by leveraging
the fact that `sed -i.bak ...` works, although we now need to
clean up the *.bak file left behind. (No big deal and way better
than maintaining OS-dependent logic.)
